It's only my opinion, but I can't see one being worth much more even though it's 'the first year.' To me, I think the value in this market is more as a working motorcycle than it is as a first year product. Now, if it had a low production #, was ridden by "Pee-Wee" Gleason (as Jay was known at the time), and had documentation to that effect, and was ~1K miles or less, then you might be able to argue for its >$ status. I'd assign a price of $4K as a fully-functional bike, and even then it may be stretching it.
Now I don't want to burst the dreams of you '85 owners for The Big Payday, but bottom-line is what someone is willing to give you for it, and I just don't think that in this economy you are going to find people willing to give much above that,
if that, for a clean example. Not when they can go out and find a clean much-newer example for not much more.
If you think you can put one aside and sell it in 20 years for 'Big Bux,' then 'the more-original, the better.' From its era, and in the Yamaha family, I bet a 1985 RZ500 as stock as you can find one, will be worth more than a VMax of the same year.